Numbers 22:2-6

²And Balak the son of Zippor saw all that Israel had done to the Emorites.

³And Moab was greatly afraid of the people, because it was numerous; and Moab was horrified because of the children of Israel.

⁴And Moab said unto the elders of Midian, Now will this assemblage devour all that is round about us, as the ox devoureth the grass of the field; and Balak the son of Zippor was king of Moab at that time.

⁵And he sent messengers unto Bil'am the son of Beor to Pethor, which is by the river, in the land of the children of his people, to have him called; saying, Behold, there is a people come out from Egypt; behold, it covereth the surface of the earth, and it is abiding opposite to me:

⁶And now do but come, curse me this people; for it is too mighty for me; peradventure I may be able to smite it, that I may drive it out of the land; for I know that he whom thou blessest is blessed, and he whom thou cursest is cursed.